The 16S rDNA sequences of the RYD phytoplasmas and related phytoplasmas in the RYD 16S-group (RYD-J, RYD- Th, BGWL-Th, BGWL-KK, BraWL-KK and SCWL-Ud)
The base positions were numbered as described previously (Namba et al., 1993a). Sequence analysis of the phytoplasmas of the RYD 16S-group indicated that there are several signature sequences unique to this group: 59-AACACTG-39 (positions 604–610) and 59-GCAA-39 (999–1002)